Olete.in – MCQs, Mock Tests & Government Job Prep | Express.js Express.js Mcq Question Set 1

Who is credited as the developer of Express.js?

1. Larry wall
2. Rich Hickey
3. TJ Holowaychuk
4. Rob Pike

✅ Correct Answer: 3

Which of the following are the core features of the Express framework?

1. It allows us to set up middleware to respond to HTTP Requests.
2. It defines a routing table that can work as per HTTP Method and URL.
3. It is used to render the HTML pages dynamically.
4. All of the above.

✅ Correct Answer: 4

In which of the following year was Express.js initially released?

1. November 2010
2. November 2011
3. December 2010
4. December 2011

✅ Correct Answer: 1

What is the way to store local variables that can be accessed within the application?

1. Using Config file
2. Using database
3. Using app.locals
4. Using app.storage

✅ Correct Answer: 3

In combination with a request method, root paths define the endpoints at which requests can be made. Which of the following are valid forms of route path?

1. strings
2. string patterns
3. regular expressions
4. All of the above

✅ Correct Answer: 4

Where are the captured values populated regarding the route parameters?

1. req.data
2. app.locals
3. req.params
4. All of the above

✅ Correct Answer: 3

How is it possible to create chainable route handlers for a route path in Express.js?

1. Using app.route()
2. Using app.routes()
3. Using app.router()
4. Using app.routing()

✅ Correct Answer: 1

Which of the following function arguments are available to Express.js Route handlers?

1. req - the request object
2. res - the response object
3. next
4. All of the above

✅ Correct Answer: 4

Which of the following is the Scaffolding in Express.js?

1. Yeoman
2. Express application generator
3. Handler functions
4. Both A & B

✅ Correct Answer: 4

In Express.js, the method app.all(path, callback [, callback ...]) can accept all HTTP methods:

1. True
2. False
3. Insufficient data
4. none of the above

✅ Correct Answer: 1

Which of the following is a middleware in Express.js?

1. function(req){ }
2. method(req){ }
3. function(req,res,next){ }
4. method(req,res,next){ }

✅ Correct Answer: 3

Which of the following is the correct statement in the context of Express.js?

1. Express is a minimal and flexible Node.js web application framework.
2. Express is a minimal and flexible React.js web application framework.
3. Express is a minimal and flexible Redux.js web application framework.
4. Express is a minimal and flexible Angular.js web application framework.

✅ Correct Answer: 1

Which of the following is the correct syntax to use Express.js in Node?

1. var = require('express')();
2. var_require('express')();
3. var app = require('express')();
4. None of the above.

✅ Correct Answer: 3

What is the meaning of templating in Express.js?

1. Pug
2. EJS
3. Mustache
4. All of the above.

✅ Correct Answer: 4

To use Mongo with Express.js, we need a client API for node.

1. TRUE
2. FALSE
3. Can be true or false
4. cannot say

✅ Correct Answer: 1

Which of the following facilitates us to create a skeleton for a web application easily?

1. Authentication
2. APIs
3. Debugging
4. Scaffolding

✅ Correct Answer: 4

Which of the following is a middleware that parses cookies attached to the client request object?

1. cookie
2. cookies
3. cookie-parser
4. none of the above

✅ Correct Answer: 3

The method of using values is called?

1. filters
2. interpolation
3. inheritance
4. includes

✅ Correct Answer: 2

Which of the following command is used to check the current version of NPM?

1. nmp --ver
2. npm --version
3. npm help
4. None of the above.

✅ Correct Answer: 2

In Express.js, the method app.all(path, callback [, callback ...]) is:

1. True
2. False
3. Cannot say
4. None of the mentioned

✅ Correct Answer: 1

Which of the following method requests that the server accept the data enclosed in the request to modify an existing object identified by the URI?

1. GET
2. DELETE
3. PUT
4. Post

✅ Correct Answer: 3

Which of the following statement is correct in the case of backlog arguments?

1. A port number on which the server should accept incoming requests.
2. The backlog argument is the name of the domain.
3. The maximum number of queued pending connections.
4. An asynchronous function is called when the server starts listening for requests.

✅ Correct Answer: 3

Which of the following was the earlier name of the Pug?

1. Terse
2. DRY
3. Express
4. Jade

✅ Correct Answer: 4

Which of the following function is used to specify what to do when a get request at the given route is called?

1. app.get(route, callback)
2. get(route, callback)
3. js.get(route, callback)
4. fun.get(route, callback)

✅ Correct Answer: 1

Where are the captured values populated regarding route parameters?

1. app.locals object
2. req.data object
3. req.params object
4. None of the above.

✅ Correct Answer: 3

Cookies are the complex, large files/data sent to the server with a client request and stored on the server-side.

1. This statement is true.
2. This statement is false.
3. Can be true or false
4. Cannot say.

✅ Correct Answer: 2

HTTP is stateless.

1. This statement is true.
2. This statement is false.
3. It can be true or false.
4. Cannot say.

✅ Correct Answer: 1

Express is a minimal and flexible _______ web application framework.

1. Node.js
2. React.js
3. Redux.js
4. Angular.js

✅ Correct Answer: 1

Express.js, or simply Express, is a _________ web application framework for Node.js

1. Front-end
2. Back-end
3. Database
4. none of the above

✅ Correct Answer: 2

Pug earlier known as ?

1. Terse
2. DRY
3. Express
4. Jade

✅ Correct Answer: 4

backlog arguments defines as?

1. A port number on which the server should accept incoming requests.
2. Name of the domain
3. The maximum number of queued pending connections
4. An asynchronous function that is called when the server starts listening for requests.

✅ Correct Answer: 3

Which method requests that the server accept the data enclosed in the request as a modification to existing object identified by the URI?

1. GET
2. DELETE
3. PUT
4. Post

✅ Correct Answer: 3

This method of using values is called ?

1. filters
2. interpolation
3. inheritance
4. includes

✅ Correct Answer: 2

What are core features of Express framework?

1. Allows to set up middlewares to respond to HTTP Requests
2. Defines a routing table which can works as per HTTP Method and URL
3. Dynamically render HTML Pages
4. All of the above

✅ Correct Answer: 4

_____ is a middleware which parses cookies attached to the client request object.

1. cookie
2. req.cookies
3. cookie-parser
4. none of the above

✅ Correct Answer: 3

________ allows us to easily create a skeleton for a web application

1. Authentication
2. APIs
3. Debugging
4. Scaffolding

✅ Correct Answer: 4

In order to use Mongo with Express, we need a client API for node.

1. TRUE
2. FALSE
3. Can be true or false
4. Can not say

✅ Correct Answer: 1

What will be the output of the below code in the console? File: my_module.js exports.name = 'Zeus'; Code: var my_module = require('./mymodule'); console.log((function(settings){ return settings.split('').reverse().join('') })(my_module.name));

1. Error
2. Zeus
3. undefined
4. sueZ

✅ Correct Answer: 1

How to store local variables that can be access within the application?

1. Using app.locals
2. Using app.storage
3. Using database
4. Config file

✅ Correct Answer: 1

Route paths, in combination with a request method, define the endpoints at which requests can be made. Which of following are valid form of route path?

1. strings
2. string patterns
3. regular expressions
4. All of above

✅ Correct Answer: 4

Where is captured values are populated regarding route parameters?

1. req.params object
2. app.locals object
3. req.data object
4. None of above

✅ Correct Answer: 1

What function arguments are available to Express.js Route handlers?

1. req - the request object
2. res - the response object
3. next
4. All of the above

✅ Correct Answer: 4

How can we create chainable route handlers for a route path in ExpressJS app?

1. Using app.route()
2. Using app.router()
3. Using app.routing()
4. All of these

✅ Correct Answer: 1

What are the commands are used to enable debugging in Express App?

1. Linux
2. Windows
3. Both A and B
4. None

✅ Correct Answer: 3

In ExpressJS, the method app.all(path, callback [, callback ...]) can accept all HTTP methods

1. True
2. False
3. Insufficient data
4. None of the mentioned

✅ Correct Answer: 1

Who was developed by Express.Js ?

1. Larry wall
2. TJ Holowaychuk
3. Rob Pike
4. Rich Hikey

✅ Correct Answer: 2

Express.Js was initilay released in

1. November 2010
2. November 2011
3. December 2010
4. December 2011

✅ Correct Answer: 1

What are core features of Express framework ?

1. table which can works as per HTTP Method and URL
2. Dynamically render HTML Pages
3. Allows to set up middlewares to respond
4. All of the above

✅ Correct Answer: 4

Where is captured values are populated regarding route parameters are:

1. req.data
2. app.locals
3. req.params
4. Both A & B

✅ Correct Answer: 3

How can we create chainable route handlers for a route path in ExpressJs ?

1. Using app.route()
2. Using app.routes()
3. Using app.router()
4. Using app.routing()

✅ Correct Answer: 1